SITL Forge - FPV Laboratory

Try the physics-first quadcopter laboratory — free. Fly two preset drone builds with the full 1000Hz simulation, calibrated motor models, virtual workbench, and built-in PID flight controller. Upgrade to unlock the complete parts catalog and bridges to real flight-controller firmware.

SITL Forge - FPV Laboratory Demo is a free taste of the physics-first quadcopter simulator and engineering workbench. The full 1000Hz simulation engine, calibrated motor models, virtual workbench, OSD, debug graphs, and built-in PID flight controller — no compromises on fidelity, no time limits. Content is limited to two preset drone builds; upgrade to unlock the complete parts catalog and integration with real flight-controller firmware.<br><br>---<h2 class="bb_tag" >What's in the demo</h2><br><ul class="bb_ul"><li> Full 1000Hz physics simulation (Jolt Physics with the calibrated VMG motor model)<br></li><li> Built-in PID flight controller in ACRO, ANGLE, and HORIZON modes<br></li><li> PID and Rates tuning with live feedback<br></li><li> Two preset drone builds: a 7&quot; airframe and a 10&quot; airframe<br></li><li> Two calibrated motors and two matched propellers<br></li><li> One ESC stack and one battery<br></li><li> Full OSD, debug graphs, and force / drag visualization<br></li><li> Procedural motor audio generated from RPM, current, and thrust<br></li><li> Joystick and RC transmitter support<br></li><li> FPV camera with lens distortion, chromatic aberration, and vignetting<br></li><li> Bilingual interface: English and Ukrainian</li></ul><br>---<h2 class="bb_tag" >What the full version unlocks</h2><br><ul class="bb_ul"><li> Complete parts catalog — dozens of frames, motors, propellers, ESCs, and batteries calibrated to real bench data<br></li><li> Vibration tuning — inject configurable noise into the simulated gyro and accelerometer to stress-test PID stability<br></li><li> Payload simulation — attach and release boxes, tubes, and custom weights mid-flight<br></li><li> Simulation feature toggles — motor thermals, ESC damage, battery wear, motor drag, and more<br></li><li> Optional DLC bridges to real firmware running in software-in-the-loop mode (Betaflight, iNAV, ArduPilot — sold separately)<br></li><li> MSP Bridge for connecting Betaflight Configurator directly to the simulated drone</li></ul><br>---<h2 class="bb_tag" >Same engine. Same fidelity.</h2><br>The demo runs the exact same physics, audio, and rendering pipeline as the full version. What you fly here is what you get — only the parts catalog and advanced features are gated.<br><br><ul class="bb_ul"><li> Motor iron losses (eddy current + hysteresis) calibrated from real dyno data<br></li><li> Per-propeller thrust and torque coefficients fitted across multiple motor + prop combinations<br></li><li> LiPo discharge with voltage sag, internal resistance, and state-of-charge tracking<br></li><li> ESC dead-time losses, timing advance, current limiting, and thermal derating<br></li><li> Aerodynamic drag computed via virtual wind tunnel with shader-based surface analysis</li></ul><br>---<h2 class="bb_tag" >Who is this for?</h2><br><ul class="bb_ul"><li> FPV pilots evaluating whether the simulator fits their workflow before buying<br></li><li> Drone engineers and hobbyists who want to test physics fidelity firsthand<br></li><li> Builders and tinkerers curious about the engine driving SITL Forge</li></ul><br>---<br><br>The demo is fully self-contained — no online activation, no time limits, no recurring prompts. Just install, connect a controller, and fly.<br>

Good Game Database

SITL Forge - FPV Laboratory Demo Achievements